## Redundant vs Tautology - What's the difference?
redundant | tautology |
## As a adjective is superfluous; exceeding what is necessary. |

## redundant## English## Adjective(en adjective)
2013 , Tom Denton, Automobile Electrical and Electronic Systems , page 142: *The two lines are mainly used for***redundant**and therefore fault-tolerant message transmission, but they can also transmit different messages.
## Antonyms* non-redundant## External links* * * ---- |
## tautology## English## Noun*It is***tautology**to say, "Forward Planning".
- ''The expression "raze to the ground" is a tautology, since the word "raze" includes the notion "to the ground".
1946 , Bertrand Russell, History of Western Philosophy : *Pure mathematics consists of***tautologies**, analogous to ‘men are men’, but usually more complicated.
*Given a Boolean A, "A OR (NOT A)" is a***tautology**.
*A logical statement which is neither a***tautology**nor a contradiction is a contingency.
*A***tautology''' can be verified by constructing a truth tree for its negation: if all of the leaf nodes of such truth tree end in X's, then the original (pre-negated) formula is a '''tautology**.
## Antonyms* contradiction in terms * (in logic) contradiction
* (literary) oxymoron
## Coordinate terms* (in logic) contingency, contradiction
## Derived terms* tautological * tautologically * tautologise * tautologist * tautologous * tautologously |